The SSH Key That Broke Our CI Pipeline: Why Your Linux Server Setup Fails at late at night (and How to Fix It Before It Costs You a significant amount)
I was woken up at 3:17 a.m. on August 12, 2021, by a PagerDuty alert titled “STAGING-DEPLOY-FAILED x12 (SSH auth rejected)”. Not an outage — just deploys failing, silently, *every hour*, like clockwork. My team had already rolled back the latest Terr...